单项选择题

Where advance freight is agreed upon，payment does not depend on delivery and must be made （）the ship is lost and the cargo never delivered.

A.Unless
B.When
C.Because
D.Even though

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What does the DSC control unit do if the GMDSS radio op...

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C.It will initiate the DSC distress alert and default information will automatically be transmitted
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港口国检查文件及报告（PSC）

Where advance freight is agreed upon，payment does not depend on delivery and must be made （）the ship is lost and the cargo never delivered.